1161266255042 has 8 divisors (see below), whose sum is σ = 1770455110332. Its totient is φ = 571114551600.

The previous prime is 1161266254937. The next prime is 1161266255063. The reversal of 1161266255042 is 2405526621611.

It can be written as a sum of positive squares in 2 ways, for example, as 1160512807441 + 753447601 = 1077271^2 + 27449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4759287809 + ... + 4759288052.

Almost surely, 2^{1161266255042} is an apocalyptic number.

1161266255042 is a deficient number, since it is larger than the sum of its proper divisors (609188855290).

1161266255042 is an equidigital number, since it uses as much as digits as its factorization.

1161266255042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518575924.

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 1161266255042 in words is "one trillion, one hundred sixty-one billion, two hundred sixty-six million, two hundred fifty-five thousand, forty-two".